package com.comp3111.localendar.calendar;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

import com.comp3111.localendar.Localendar;
import com.comp3111.localendar.R;

public class onlineEvent extends ListActivity {

	// Progress Dialog
	private ProgressDialog pDialog;
	
	  // Creating JSON Parser object 
	JSONParser jParser = new JSONParser();
	 
	ArrayList<HashMap<String, String>> productsList;

	// url to get all products list
	private static String url_all_products = "http://eea258.ee.ust.hk/develop/xmeng/elec4010b/get_all_products.php";

	// JSON Node names
	private static final String TAG_SUCCESS = "success";
	private static final String TAG_PRODUCTS = "products";
	private static final String TAG_PID = "pid";
	private static final String TAG_NAME = "name";

	// products JSONArray
	JSONArray products = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setTitle("Online Event");
		setContentView(R.layout.all_online_event);

		// Hashmap for ListView
		productsList = new ArrayList<HashMap<String, String>>();

		// Loading products in Background Thread
		new LoadAllProducts().execute();
        
		 Button cancelButton = (Button) findViewById(R.id.btn_cancel);
	        cancelButton.setOnClickListener(new OnClickListener() {
				
				@Override
				public void onClick(View v) {
					// TODO Auto-generated method stub
					finish();
				}
			});
	        Button confirmButton = (Button) findViewById(R.id.btn_share);
	        cancelButton.setOnClickListener(new OnClickListener() {
				
				@Override
				public void onClick(View v) {
					// TODO Auto-generated method stub
					finish();
				}
			});
		// Get listview
		ListView lv = getListView();
   
		// on seleting single product
		// launching Edit Product Screen
		lv.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
			    sendToMap(view);	
			}
		});

	}

	// Response from Edit Product Activity
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		// if result code 100
		if (resultCode == 100) {
			// if result code 100 is received
			// means user edited/deleted product
			// reload this screen again
			Intent intent = getIntent();
			finish();
			startActivity(intent);
		}

	}
	
	public void sendToMap(View view) {
	// getting values from selected ListItem
		String pid = ((TextView) view.findViewById(R.id.pid)).getText()
				.toString();

		// Starting new intent
		Intent in = new Intent(this,OnlineEventDetail.class);
		// sending pid to next activity
		in.putExtra(TAG_PID, pid);

		// starting new activity and expecting some response back
		startActivityForResult(in, 100);
		this.finish();
   }

	/**
	 * Background Async Task to Load all product by making HTTP Request
	 * */
	class LoadAllProducts extends AsyncTask<String, String, String> {

		/**
		 * Before starting background thread Show Progress Dialog
		 * */
		@Override
		protected void onPreExecute() {
			super.onPreExecute();
			pDialog = new ProgressDialog(onlineEvent.this);
			pDialog.setMessage("Loading events. Please wait...");
			pDialog.setIndeterminate(false);
			pDialog.setCancelable(false);
			pDialog.show();
		}

		/**
		 * getting All products from url
		 * */
		/**
         * getting All products from url
         * */
        protected String doInBackground(String... args) {
            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            // getting JSON string from URL
            JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
 
            // Check your log cat for JSON reponse
            Log.d("All Products: ", json.toString());
 
            try {
                // Checking for SUCCESS TAG
                int success = json.getInt(TAG_SUCCESS);
 
                if (success == 1) {
                    // products found
                    // Getting Array of Products
                    products = json.getJSONArray(TAG_PRODUCTS);
 
                    // looping through All Products
                    for (int i = 0; i < products.length(); i++) {
                        JSONObject c = products.getJSONObject(i);
 
                        // Storing each json item in variable
                        String id = c.getString(TAG_PID);
                        String name = c.getString(TAG_NAME);
 
                        // creating new HashMap
                        HashMap<String, String> map = new HashMap<String, String>();
 
                        // adding each child node to HashMap key => value
                        map.put(TAG_PID, id);
                        map.put(TAG_NAME, name);
 
                        // adding HashList to ArrayList
                        productsList.add(map);
                    }
                } else {
                    // no products found
                    // Launch Add New product Activity
                    Intent i = new Intent(getApplicationContext(),
                            shareEvent.class);
                    // Closing all previous activities
                    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(i);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
 
            return null;
        }

		/**
		 * After completing background task Dismiss the progress dialog
		 * **/
		protected void onPostExecute(String file_url) {
			// dismiss the dialog after getting all products
			pDialog.dismiss();
			// updating UI from Background Thread
			runOnUiThread(new Runnable() {
				public void run() {
					/**
					 * Updating parsed JSON data into ListView
					 * */
					ListAdapter adapter = new SimpleAdapter(
							onlineEvent.this, productsList,
							R.layout.list_item, new String[] { TAG_PID,
									TAG_NAME },
							new int[] { R.id.pid, R.id.name });
					// updating listview
					setListAdapter(adapter);
				}
			});

		}

	}
}
